摘要
以西藏林芝八一镇"农牧一体化"农业生态试验站为平台,于2015年开展玉米田养鹅(RGICF)、常规(CCP)和对照(CK)长期定位试验,调查统计放牧前、放牧中和放牧后玉米农田杂草种类和密度,从杂草群落结构和功能群层面对比分析,以期揭示不同杂草管理方式对田间杂草群落结构的影响。结果表明:放牧前,RGICF和CK杂草种类高达14种,密度接近141.82株/m^2,依次高于CCP 10种和135.82株/m^2,杂草优势种少而突出,杂草功能群DA占优势。放牧中,RGICF和CK杂草总密度下降了75.68%和17.41%;CCP杂草功能群DA比重上升,总密度增加了13.07%,但优势种少而突出。放牧后,RGICF杂草种类和密度基本恒定,CK杂草总密度减少了71.74%,CCP杂草总密度增加了1.71倍,RGICF、CCP和CK均以功能群DA为主。这说明了玉米田养鹅模式下既能充分利用杂草资源,又可维持杂草群落结构的稳定性。
A long-term localization experiment for raising geese in corn fields （RGICF）, conventional corn planting （CCP） and control （CK） - was conducted in 2015 in “agro-pastoral integration”agricultural experiment station in Bayi Town, Nyingchi, Tibet. The species anddensity of weeds in farmland Bef-, Dur-, and Aft-grazing were investigated, and comparative analysis of weed community structure and functional groups was made to reveal the effect of different weed management practices on the community structure of weeds in the field. The results showed： Bef-grazing, there were 14 species of RGICF and CK weeds with a density close to 141.82 plants/m2, which was higher than CCP with 10 species and 135.82 plants/m2; the dominant species of weeds were few and prominent, and the weed functional group DA predominated.Dur-grazing, the total density of RGICF and CK weeds decreased by 75.68% and 17.41%; the proportion of DA of CCP weed functional group increased, and the total density increased by 13.07%, but the dominant species were less prominent. Aft-grazing, the species and density of RGICF weeds were basically constant, the total density of CK weeds was reduced by 71.74%, and the total density of CCP weeds was increased by 1.71 times.The functional groups of DA were mainly found in RGICF, CCP and CK. This shows that raising geese in corn geese model can fully utilize the weed resources and maintain the stability of the weed community structure.
作者
边步云
张永锋
关法春
程犇
仝淑萍
王东
BIAN Buyun;ZHANG Yongfeng;GUAN Fachun;CHENG Ben;TONG Shuping;WANG Dong(National Key Station of Field Scientific Observation ＆ Experiment in Nyingchi Tibet,Nyingchi Tibet,860000,China;Tibet Key Laboratory of Forest in Plateau Area,Ministry of Education,NyingchiTibet,860000,China;Tibet Agriculture and Animal Husbandry College,Ecological Research Institute of Tibet plateau,Nyingchi Tibet,860000,China;Jilin Academy of Agricultural Sciences,Changchun Jilin,130033,China;Station of Agro-ecology Research on Agro-pastoral Integration（Nyingchi）,Nyingchi Tibet,860000,China;Si-xiang-yuan agricultural Science ＆ Technology Co.Ltd in Harbin,Heilongjiang Harbin,150000)
出处
《高原农业》
2018年第3期253-260,共8页
Journal of Plateau Agriculture
基金
吉林省农业科技创新工程项目"基于玉米富氮秸秆利用的循环农业生产模式应用研究"
西藏特色农牧资源研发协同创新中心高原生态研究平台资助
关键词
玉米田养鹅
杂草
群落结构
农田
Raising geese in corn fields
weed
community structure
farmland
